I finished a serene first person adventure game today called "Paradise Marsh". It has a great atmosphere and a nice art style. It could have had a deeper story and better save system but the overall game play is solid and enjoyable. It can be found on Itch DRM free and it has a native Linux version.
https://lazyeti.itch.io/paradise-marsh
A more in depth full review I put up can be found on Gamespot.
https://www.gamespot.com/paradise-marsh/user-reviews/2200-12872072/